Shisui was an honorable black ops member. Its probably not that Danzou attacked Shisui, and Shisui just didn't fight back, its probably that Shisui messed up and as punishment Danzou ordered to hand over one of his eyes.
OR Danzou just wanted one of the eyes and ordered Shisui to give him one. Either way, its unlikely the two engaged in battle, as again Shisui likely honored his orders.
Maybe because it was a fight he couldn't win, I dont think it was willingly. Even if he had the will of fire.
I dunno if Danzou had x10 sharingan + senju DNA, nonetheless shisui had MS, and i imagine since his special MS ability is KA, he is a true master in genjutsu and other jutus's
He probably knew Danzo would scrape him if he didn't give up the eye. And if he was in Root, they **** with their bodies so they can be disposed if they betray it. For example the shit on Sai's tongue.
It was never stated he was a master of genjutsu only that he had the strongest of all genjutsu. KA takes a long time to "recharge", it could have been that he had already used both of them.
Danzo is an exceptionally talented shinobi even before the Sharingan and Senju DNA. Even a fighter like Shisui could lose an eye to escape if that meant survival.
Ya, but shisui had MS he isn't a fodder either, what it looks like that he gave up on his eye, and trusted Danzou to protect the village, maybe it was bad translation
MS doesn't grant you invincibility, it's a technique like any other and his MS was a genjustu he could use once a decade. Like I said he probably sacrificed the eye to escape from Danzo.